Blue Fireball 9-pc Fine-Tuning Spacer Ring Set for M54 Threads - 0.1 to 1.0 mm

$45.95
Blue Fireball 9-pc Fine-Tuning Spacer Ring Set for M54 Threads - 0.1 to 1.0 mm
Blue Fireball 9-pc Fine-Tuning Spacer Ring Set for M54 Threads - 0.1 to 1.0 mm

Blue Fireball 9-pc Fine-Tuning Spacer Ring Set for M54 Threads - 0.1 to 1.0 mm

$45.95
Set of 9 aluminum spacer rings - color may be black or silver depending on stock. Set allows you to fine tune your M54 setup for proper backspacing if you need fine shim movement.


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Manufacturer: Agena Astro
  • Description

The 9 piece set of spacers from Bluefire is a popular M54 accessory set we feel is a must have for any astro imager.  This shim set allows you to fine tune your spacing so you can dial in backfocus.

  • Set of 9 aluminum spacer rings.
  • Use to fine tune the spacing or introduce a small amount of rotation between M54 threaded accessories in an imaging train
  • Includes 1 ring each of 0.1, 0.15, 0.2, 0.3, 0.4, 0.5, 0.6, 0.8 and 1mm thicknesses
  • Each ring is individually stamped with its thickness
  • It is not uncommon for these to have minor scratches/scuffs/brown stains that look like rust but aren't. Functionality is not affected in any way.
  • Please note that these spacer rings are unthreaded
  • Nominal inside diameter = 54.1mm; nominal outside diameter = 62.1mm